Currently I have 4 Special Explore but for the life of me I can't remember
from which zone I acquired it, and I have also met others in this position.

So I was thinking that it would be good to have an automatic special explore
checklest. So that say when you found a special explore in say Arelium you
could check your explore score and it would list "1.Arelium 2....." and so
forth.

I think it would be a handy way of keeping track of where you obtained your
special explore, without reducing the challenge.